Stainless Steel Flanged Gate Valve

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Stainless Steel Flanged Gate Valve

Material:Carbon Steel (WCB, WCC for strength), Stainless Steel (SS304, SS316 for corrosion resistance), Cast Iron

Size Range:DN50-DN400

Connection Options:Flanged

Working Pressure:Class 150 to Class 2500

Working Temperature:-29°C to 425°C

Sealing Options:Metal-to-Metal, Resilient Seat, Graphite, PTFE

Manufacturing Method:Cast, Forged, Machined

Applicable Medium:Water, Oil, Gas, Steam, Chemical Fluids

Manufacturing Standard:API 600

Product Overview

Gate valves are used to completely shut off or allow full flow in a pipeline. They are commonly used when a straight-line flow of fluid and minimum flow restriction are required. The gate valve operates by lifting a gate (wedge) out of the path of the fluid, providing a full, unrestricted flow when open. Made from high-quality materials including carbon steel, stainless steel, and cast iron, these valves are designed to provide durability, corrosion resistance, and reliable service across various industrial applications.

Product Features

Corrosion-Resistant Material: Made from stainless steel (e.g., CF8/304 or CF8M/316), providing excellent resistance to rust and chemical corrosion.

Secure Flanged Connection: Flanged ends allow for easy installation and maintenance, ensuring a strong and leak-proof connection.

Full Bore Design: Allows for unrestricted flow, reducing pressure drop and increasing efficiency.

Rising Stem Option: Provides visual indication of valve position (open or closed).

High Temperature and Pressure Tolerance: Engineered to withstand demanding conditions without compromising performance.

Specification Parameters

Standards and Norms

Item	Standard
Design and Manufacture	GB 12234
Structure Length	GB 12221
Pressure-Temperature Rating	GB/T 12224
Connection Flange	JB/T 79.1–2–94, GB 9113–2000, HG 20592–20635
Test and Inspection	JB/T 9092–1999, GB 13927–2005

Performance Parameters

No.	Project Name	PN16	PN25	PN40	PN64	PN100	PN160
1	Nominal Pressure (MPa)	1.6	2.5	4.0	6.4	10	16
2	Shell Test Pressure (MPa)	2.4	3.75	6.0	9.6	16	24
3	High-Pressure Seal Test Pressure (MPa)	1.76	2.75	4.4	7.04	11	17.6
4	Max Working Pressure under Normal Temp.	≤1.6	≤2.5	≤4.0	≤6.4	≤10	≤16

Main Components Material

Part Name	Material Name
Body	WCB / 15CrMo / 20CrMoV
Valve Cover	WCB / 15CrMo / 20CrMoV
Valve Disc	WCB / 15CrMo / 20CrMoV
Sealing Face	20Cr13 / STL
Stem	20Cr13 / 35CrMoV
Gasket	304 Soft Graphite / Flexible Graphite
Bolt	35CrMoA
Nut	30CrMo
Applicable Temp	–29°C ~ 425°C / –29°C ~ 540°C / –29°C ~ 560°C
Suitable Medium	Water, Steam, Oil, etc.

Main External and Connection Dimensions (PN 1.0 MPa)

DN (mm)	L (mm)	D (mm)	D1 (mm)	D2 (mm)	b–f (mm)	Z–φd	H (mm)	D₀ (mm)	Weight (kg)
15	130	95	65	46	14–2	4–φ14	160	100	5
20	150	105	75	56	16–2	4–φ14	165	100	8
25	160	115	85	65	16–2	4–φ14	200	125	11
32	180	135	100	78	18–2	4–φ18	240	125	13
40	200	145	110	85	18–2	4–φ18	245	135	9.5
50	180	165	125	99	20–2	4–φ18	286	180	14
65	220	185	145	118	20–2	4–φ18	320	180	31
80	230	200	160	132	22–2	8–φ18	373	200	40
100	230	220	180	156	22–2	8–φ18	428	200	55
125	255	250	210	184	22–2	8–φ18	513	240	95
150	280	285	240	211	24–2	8–φ22	580	240	140
200	330	340	295	266	24–2	8–φ22	792	320	145
250	380	395	350	319	26–2	12–φ22	897	320	230
300	420	445	400	370	26–2	12–φ22	1032	400	330
350	450	505	460	429	26–2	16–φ22	1170	400	460
400	480	565	515	480	28–2	16–φ22	1330	500	580
450	510	615	565	530	28–2	20–φ22	1650	500	680
500	540	670	620	582	28–2	20–φ26	1650	500	830
600	600	780	725	682	34–2	20–φ30	1980	700	1100
700	680	895	840	794	34–5	24–φ30	2120	700	1200
800	730	1015	950	901	36–5	24–φ33	2420	800	2090
900	800	1115	1050	1001	38–5	28–φ33	2750	800	3100
1000	850	1230	1160	1112	38–5	28–φ36	3130	900	4050

Main External and Connection Dimensions (PN 1.6 MPa)

DN (mm)	L (mm)	D (mm)	D1 (mm)	D2 (mm)	b–f (mm)	Z–φd	H (mm)	D₀ (mm)	Weight (kg)
15	130	95	65	45	14–2	4–φ14	170	140	5
20	150	105	75	55	14–2	4–φ14	205	160	8
25	160	115	85	65	14–2	4–φ14	270	160	12
32	180	135	100	78	16–2	4–φ18	310	200	19
40	200	145	110	85	16–3	4–φ18	310	200	26.5
50	250	160	125	100	16–3	4–φ18	358	240	29
65	265	180	145	120	18–3	8–φ18	373	240	36
80	280	195	160	135	20–3	8–φ18	435	280	43
100	300	215	180	155	20–3	8–φ18	500	300	63
125	325	245	210	185	22–3	8–φ22	600	300	105
150	350	280	240	210	24–3	8–φ23	674	360	134
200	400	335	295	265	26–3	12–φ23	795	400	192
250	450	405	355	320	30–3	12–φ25	980	500	270
300	500	460	410	375	30–4	12–φ25	1145	580	379
350	550	520	470	435	34–4	16–φ25	1280	640	490
400	600	580	525	485	36–4	16–φ30	1420	640	540
450	650	640	585	545	40–4	20–φ30	1541	720	870
500	700	705	650	608	44–4	20–φ33	1673	720	1100
600	800	840	770	718	48–5	20–φ36	1874	850	1570
700	900	910	840	788	50–5	24–φ39	2083	800	1870
800	1000	1020	950	898	52–5	24–φ41	2350	900	2570
900	1100	1120	1050	998	54–5	28–φ41	2730	1000	3850
1000	1200	1265	1170	1110	56–5	28–φ42	3245	1000	4560

Main External and Connection Dimensions (PN 2.5 MPa)

DN (mm)	L	D	D1	D2	b–f	Z–φd	H	D₀	Weight (kg)
15	130	95	65	45	16–2	4–φ14	170	120	5.5
20	150	105	75	55	16–2	4–φ14	190	140	7
25	160	115	85	65	16–2	4–φ14	205	160	11
32	180	135	100	78	18–2	4–φ18	270	170	14
40	200	145	110	85	18–3	4–φ18	310	200	20
50	250	160	125	100	20–3	4–φ18	358	240	34
65	280	180	145	120	20–3	8–φ18	373	240	36
80	310	195	160	135	22–3	8–φ18	420	280	50
100	350	230	190	160	24–3	8–φ23	480	300	69
125	400	270	220	188	26–3	8–φ25	614	360	110
150	350	300	250	218	30–3	8–φ25	674	360	141
200	400	375	320	282	36–3	12–φ30	811	450	192
250	500	425	370	335	40–4	12–φ30	990	450	207
300	580	485	430	390	44–4	16–φ30	1145	580	350
350	600	550	490	448	44–4	16–φ34	1280	640	460
400	650	610	550	505	50–4	16–φ34	1452	720	650
450	700	660	600	565	50–4	20–φ34	1541	720	910
500	800	730	670	618	56–5	20–φ41	1676	720	1160
600	900	840	770	718	56–5	20–φ41	1874	800	1650
700	1000	975	875	815	62–5	24–φ48	2083	900	1980
800	1100	1075	980	905	62–5	24–φ48	2400	950	2740
900	1200	1190	1090	1008	66–5	28–φ54	2950	1000	3900
1000	1305	1305	1210	1140	68–5	28–φ58	3245	1000	4850

Main External and Connection Dimensions (PN 4.0 MPa)

DN (mm)	L	D	D1	D2	D6	b–f	f1	Z–φd	H	Weight (kg)
15	130	95	65	45	40	16–2	4	4–φ14	135	6
20	150	105	75	55	51	16–2	4	4–φ14	190	10
25	160	115	85	65	58	16–2	4	4–φ14	205	12
32	180	135	100	78	66	18–2	4	4–φ18	270	15
40	200	145	110	85	76	18–3	4	4–φ18	310	21
50	250	160	125	100	88	20–3	4	4–φ18	371	34
65	280	180	145	120	110	22–3	4	8–φ18	455	52
80	310	195	160	135	121	22–3	4	8–φ18	456	70
100	350	230	190	160	150	24–3	4.5	8–φ25	551	80
125	400	270	220	188	176	28–3	4.5	8–φ25	628	127
150	450	300	250	218	204	30–3	4.5	8–φ30	708	154
200	550	375	320	282	260	36–3	4.5	12–φ34	855	263
250	650	445	385	345	313	42–3	4.5	12–φ40	950	368
300	750	510	450	408	364	46–4	4.5	16–φ34	1203	547
350	850	585	510	465	422	52–4	5	16–φ34	1341	629
400	950	655	585	535	474	58–4	5	16–φ41	1492	790
500	1150	755	670	612	576	62–5	5	20–φ48	1627	1073
600	1350	890	790	730	678	68–5	6	24–φ54	1926	1490
700	1450	995	900	835	786	68–5	6	24–φ54	2310	2640
800	1650	1135	1020	960	876	76–5	6	28–φ58	2600	3239

Main External and Connection Dimensions (PN 6.4 MPa)

DN (mm)	L	D	D1	D2	D6	b–f	f1	Z–φd	H	Weight (kg)
15	130	105	75	55	41	18–2	4	4–φ14	140	7
20	150	125	90	68	51	20–2	4	4–φ18	140	10
25	210	150	110	78	56	22–2	4	4–φ18	180	12
32	230	150	110	82	68	24–2	4	4–φ23	270	18
40	240	160	125	95	76	24–3	4	4–φ23	345	20
50	250	175	135	105	88	26–3	4	4–φ23	470	39
65	280	200	160	130	110	28–3	4.5	8–φ23	520	43
80	310	225	170	140	121	30–3	4.5	8–φ23	500	60
100	350	250	200	168	150	32–3	4.5	8–φ30	700	89
125	400	295	240	202	176	36–3	4.5	8–φ30	780	140
150	450	340	280	244	204	38–3	4.5	8–φ34	850	207
200	550	405	345	300	260	44–3	5	12–φ41	1030	325
250	650	470	400	352	313	48–3	5	12–φ41	1250	467
300	750	550	460	412	364	52–4	5	16–φ48	1470	590
350	850	635	525	475	422	60–5	5	16–φ48	1718	700
400	950	720	590	525	476	60–5	5	16–φ48	1885	750
500	1150	800	705	640	576	70–4	5	20–φ54	2150	1175
600	1350	930	820	750	678	76–5	5	20–φ58	2895	2960

Specification Applications

Industries

Chemical Processing: Ideal for handling corrosive chemicals and other aggressive fluids, thanks to its stainless steel construction.
Water Treatment: Used in pipelines for water distribution and treatment, where long-lasting performance and resistance to rust are required.
Pharmaceutical Industry: Ensures a sterile and contamination-free environment for fluid control in production processes.
Food & Beverage Processing: Suitable for hygienic and clean flow control, as stainless steel is easy to clean and maintain.
Oil & Gas: Reliable shut-off for pipelines transporting oils, gases, and other hydrocarbons in environments where corrosion is a concern.

Valve Actuation

Process Optimization

Precision Engineering

Pipeline Solutions

Industrial Valves

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